广州化工
廣州化工
엄주화공
Guangzhou Chemical Industry
2015年
19期
88-89,107
,共3页
共轭加成%杂化材料%催化
共軛加成%雜化材料%催化
공액가성%잡화재료%최화
amino-functionalized%catalytic properties%cyclohexenone%nitromethane
分别以甲醇与甲苯为溶剂，以3-氨丙基三乙氧基硅烷和Si-MCM-41为原料，采用后嫁接法合成了两种有机-无机杂化材料NH2(CH2)3-MCM-41。考察了该类材料在环己烯酮和硝基甲烷共轭加成反应中的催化性能。结果表明，两种材料都表现出了很高的催化性能。其中，以甲醇为溶剂合成的催化剂性能高于以甲苯为溶剂合成的催化剂，推测是由于在不同极性的溶剂中， NH2(CH2)3-MCM-41表面的氨基密度不同，从而导致了其在共轭加成反应中的催化性能的差异。
分彆以甲醇與甲苯為溶劑，以3-氨丙基三乙氧基硅烷和Si-MCM-41為原料，採用後嫁接法閤成瞭兩種有機-無機雜化材料NH2(CH2)3-MCM-41。攷察瞭該類材料在環己烯酮和硝基甲烷共軛加成反應中的催化性能。結果錶明，兩種材料都錶現齣瞭很高的催化性能。其中，以甲醇為溶劑閤成的催化劑性能高于以甲苯為溶劑閤成的催化劑，推測是由于在不同極性的溶劑中， NH2(CH2)3-MCM-41錶麵的氨基密度不同，從而導緻瞭其在共軛加成反應中的催化性能的差異。
분별이갑순여갑분위용제，이3-안병기삼을양기규완화Si-MCM-41위원료，채용후가접법합성료량충유궤-무궤잡화재료NH2(CH2)3-MCM-41。고찰료해류재료재배기희동화초기갑완공액가성반응중적최화성능。결과표명，량충재료도표현출료흔고적최화성능。기중，이갑순위용제합성적최화제성능고우이갑분위용제합성적최화제，추측시유우재불동겁성적용제중， NH2(CH2)3-MCM-41표면적안기밀도불동，종이도치료기재공액가성반응중적최화성능적차이。
Amino-functionalized mesoporous Si-MCM-41 catalysts were prepared by a post-grafting method with ( 3-Aminopropyl ) triethoxysilane and Si-MCM-41. The catalytic properties of two kinds of catalysts prepared with different solvents ( toluene and methanol ) were investigated for the conjugate addition reaction of cyclohexenone and nitromethane. All the samples were active for the conjugate addition reaction. Among them, the sample prepared with methanol exhibited higher activity under test conditions. It was supposed that the difference of catalytic performance should be mainly due to the density of amino group.
